Abstract: A method in which an improved lubricating composition containing ionic liquids is used to enable operation of chains, steel belts, wheel bearings, roller bearings, sliding bearings and electric motors for at least 48 hours by reducing the evaporation loss and the lackification tendency of the lubricant due to the lubricant being protected against thermal and oxidative attack.

Abstract: Provided are a lubricating engine oil and a method of improving nitrile seal compatibility with a lubricating oil in an engine lubricated with such lubricating oil. The method includes using as the lubricating oil a formulated oil comprising a lubricating oil base stock as a major component and one or more additives selected from the group consisting of (i) a sulfone, sulfolane, or derivative thereof; (ii) a borate ester, boron amide, or mixtures thereof; (iii) a sulfurized olefin; (iv) a thiadiazole or derivative thereof; and (v) a succinic anhydride or derivative thereof, as a minor component. Nitrile seal compatibility is improved as compared to nitrile seal compatibility achieved using a lubricating oil containing a minor component other than the one or more additives.

Abstract: The invention provides a lube oil which exhibits low vapor pressure despite having low viscosity, is non-flammable, exhibits excellent heat resistance, has tribological characteristics equivalent to those of conventional hydrocarbon-based lube oils, and can be used for a long time under very severe conditions such as high temperature and vacuum. The lube oil contains, as a base oil, an ionic liquid formed of a cation and an anion and having an ion concentration of 1 mol/dm3 or more.

Abstract: The resistance to oxidation of a lubricating oil is enhanced by the addition to the lubricating oil of an additive amount of an ionic liquid.

Abstract: The anti-wear and anti-friction performance of a lubricating oil is improved by the addition thereto of an additive amount of ionic liquids.

Abstract: The resistance to deposit formation in formulated lubricating oils is enhanced by the addition to the lubricating oil of an additive amount of ionic liquids.

Abstract: Provided is a grease composition with a long service life under high-temperature conditions, considerable low-evaporability, and incombustibility. The invention provides a grease composition comprising, as a base oil, an ionic liquid formed of a cation and an anion and having an ion concentration of 1 mol/dm3 or more as measured at 20° C., and a thickener, wherein the grease composition has a dropping point of 260° C. or higher.

Abstract: Fuels, especially hydrocarbon fuels, and lubricants, especially lubricating oils, contain a class of anti-corrosion, anti-wear, anti-fatigue, and extreme pressure additives that are derived from 1,3-dithiolane-2-thiones.

Abstract: The present invention relates to lubricating oil compositions comprising sulfurised esters that exhibit good antioxidancy performance whilst maintaining nitrile elastomer seal compatibility

Abstract: The resistance to deposit formation in formulated lubricating oils is enhanced by the addition to the lubricating oil of an additive amount of ionic liquids.

Abstract: The anti-wear and anti-friction performance of a lubricating oil is improved by the addition thereto of an additive amount of ionic liquids.

Abstract: The resistance to oxidation of a lubricating oil is enhanced by the addition to the lubricating oil of an additive amount of an ionic liquid.

Abstract: Compositions of an ester-containing phenolic antioxidant seal-conditioning agent represented by the formula and a second seal-conditioning agent selected from sulfolanes, benzyl ester, lactones, nitriles, and other ester-containing phenolic anitoxidant seal-conditioning agents, serve to protect the integrity of elastomeric materials in contact with lubricants.

Abstract: Provided is a grease composition with a long service life under high-temperature conditions, considerable low-evaporability, and incombustibility. The invention provides a grease composition comprising, as a base oil, an ionic liquid formed of a cation and an anion and having an ion concentration of 1 mol/dm3 or more as measured at 20° C., and a thickener having a dropping point of 260° C. or higher.

Abstract: Fuels, especially hydrocarbon fuels, and lubricants, especially lubricating oils, contain a class of anti-corrosion, anti-wear, anti-fatigue, and extreme pressure additives that are derived from 1,3-dithiolane-2-thiones.

Abstract: Sulfurized olefin compositions and compounds of the formula: wherein R1 is hydrogen or methyl; X is sulfur or oxygen; m is an integer from 1 to 9; and n is 0 or 1, and when n is 0 then R1 is methyl, and when n is 1 then R1 is hydrogen are disclosed. The resulting compounds are particularly the polyisobutyl-1,2-dithiole-4-cyclopentene-3-thione compounds and derivatives are useful in lubricating oils.

Abstract: A composition is disclosed which comprises a lubricating oil and a refrigerant, wherein the lubricating oil comprises a polyalkyleneglycol derivative of the formula (I): RX(RaO)x(RbO)y(RcO)zRd, wherein: X?O or S, R is a C3 to C15 substituent comprising a heterocyclic ring, in which the heteroatom(s) in said ring is (are) oxygen and/or sulphur, Ra is a C2 alkylene group, Rb is a C3 alkylene group, Rc is a C4 alkylene group, Rd is the same as R, or is H, a C1-C20 alkyl or a C1-C20 acyl, x, y, z are each independently 0 or an integer of 100 or less, and x+y+z=4 to 100, but excluding compositions where the refrigerant is halogen-free and R contains a carbonate group. The use of borate esters as dehydrogenating agents in conjunction with the above lubricating oils is also disclosed.

Abstract: A composition is disclosed which comprises a lubricating oil and a refrigerant, wherein the lubricating oil comprises a polyalkyleneglycol derivative of the formula (I): RX(RaO)x(RbO)y(RcO)zRd, wherein: X=O or S, R is a C3 to C15 substituent comprising a heterocyclic ring, in which the heteroatom(s) in said ring is (are) oxygen and/or sulphur, Ra is a C2 alkylene group, Rb is a C3 alkylene group, Rc is a C4 alkylene group, Rd is the same as R, or is H, a C1-C20 alkyl or a C1-C20 acyl, x, y, z are each independently 0 or an integer of 100 or less, and x+y+z=4 to 100, but excluding compositions where the refrigerant is halogen-free and R contains a carbonate group. The use of borate esters as dehydrogenating agents in conjunction with the above lubricating oils is also disclosed.

Abstract: In lubricant (5) of a magnetic recording medium made of conventional perfluoropolyether, one or more conductive high molecular compound is mixed. The conductive lubricant (5) prevents electric charge generated by frictional electricity from staying on the medium surface, and effectively prolongs the head-life by suppressing the break of the head element because of electric discharge between the disk medium and the head element. By employing the conductive lubricant, magnetic recording media and magnetic recording devices which are more reliable and durable can be realized.

Abstract: This invention relates to synthetic based turbo oils, preferably polyol ester-based turbo oils which exhibit exceptional load-carrying capacity by use of a synergistic combination of sulfur (S)-based and phosphorous (P)-based load additives. The S-containing additive of the present invention is thiophene carboxylic acid (TCA) derivatives, preferably TCA per se or thiophene C.sub.1 -C.sub.4 alkanoic acid and the P-containing additive is one or more amine phosphate(s). The turbo oil composition consisting of the dual P/S additives of the present invention achieves an excellent load-carrying capacity, which is better than or equivalent to that obtained when each additive was used alone at a higher treat rate than the total P/S additive combination treat rate, and this lower concentration requirement of the P and S additive allows the turbo oil composition to meet or exceed US Navy MIL-L-23699 requirements including Oxidation and Corrosion Stability and Si seal compatibility.